AEQ AM-04
Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
7
3.
OPERATION.
The front panel user interface consists of 5 rotary controls, an alarms switch, and four
bargraphs. In addition there is a headphone output, two LEDs for sustained anti-phase, a
further five LED indicators and a 525/625 switch at the rear of the unit.
AM-04 front control panel
3.1. SELECTING SOURCES
The audio source switch routes available sources to the speaker selectors, the bargraphs
and the monitoring line output. The possible choices are analog, AES, and embedded groups
1 to 4 from the SDI input. The AES/analog audio output, recovered from the SDI input,
follows the selected group but defaults to group 1 in the Analog and AES positions.
Source selector.
Speaker selector
525/625 selector
Note:
To prevent de-muxed audio from being corrupted or muted, ensure that the 525/625
switch at the rear of the unit is correct for the SDI source.
3.2. USING ALARMS
The
AM-04
can provide the following warnings:
Alarm event
Notes
Alarm indicator
Audio loss
The currently selected four audio channels are monitored for
persistent under-level. An alarm is generated when an input is
< -30dB (-50dB for AES meter) for more than 15 seconds.
Bottom bargraph
segment flashes
amber
Audio tone, TL/serial
o/p
Audio-
overlevel
The currently selected four audio channels are monitored for
transient over-level. An alarm is generated immediately when
the first red segment of the relevant bargraph is illuminated.
Bottom bargraph
segment flashes red
Audio tone, TL/serial
o/p
Audio
antiphase
Audio pairs 1&2 and pairs 3&4 are monitored for
sustained anti-phase.
Phase LED
illuminates
Audio tone, TL/serial
o/p (if enabled)
